Can someone please help explain why this may have happened. My econ 7 storage heater stopped working, when I opened up the fuse box I saw the entire fuse housing and part of the consumer unit melted. This is an old school main board that uses fuses that have wires that you screw in. I will now have to replace the whole board now as you can see its severely damaged. My question is, if the storage heater was drawing a higher load of electricity due to some problem, why didnt the fuse wire just pop to cut of supply of electricity like its suppose to ? Would really appreciate your advice please
![vldMvF.jpg.5affd9a0e8e0caf36ac9b06bf71d9125.jpg](https://proxy.imagearchive.com/b3e/b3e5cd2e824d2b2c1b5509620fd726d4.jpg)